Smart light switch with integrated scheduling

ABSTRACT

A smart light switch includes a housing, a light actuator located within the housing, and a processor and memory. The processor and memory are operably connected and located within the housing. The processor is adapted to selectively turn an electrical load on and off in accordance with a program schedule stored in memory. The smart light switch further includes a data communications module operable to provide data communication across a wireless network to a remote device. The program schedule includes time periods and a set of light activation rules for each time period. The smart light switch is operable to receive the time periods from a remote device having a different set of rules than the set of light activation rules for the smart light switch.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of the U.S. 62/645,245, filed Mar.20, 2018, the entirety of which is incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to light switches. More specifically, thepresent invention relates to Internet-enabled light switches with smartfeatures.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a novel smart lightswitch which obviates or mitigates at least one disadvantage of theprior art.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the present invention will now be described, byway of example only, with reference to the attached Figures, wherein:

FIG. 1 shows a diagram of a smart light switch and a smart thermostatlocated within a premise, in accordance with an embodiment of thepresent invention;

FIG. 2 shows an illustration of a schedule for the smart thermostatshown in FIG. 1, presented on a remote device shown in FIG. 1;

FIG. 3 shows an isometric view of the smart light switch shown in FIG.1;

FIG. 4 shows a block diagram of the hardware of the smart light switchshown in FIG. 3;

FIG. 5 shows an illustration of an installation wizard for the smartlight switch shown in FIG. 3, presented on a remote device shown in FIG.1;

FIG. 6 shows another illustration of an installation wizard for thesmart light switch shown in FIG. 3, presented on a remote device shownin FIG. 1;

FIG. 7 shows another illustration of an installation wizard for thesmart light switch shown in FIG. 3, presented on a remote device shownin FIG. 1;

FIG. 8 shows an illustration of an installation wizard for the smartlight switch shown in FIG. 3, presented on a remote device shown in FIG.1;

FIG. 9 shows an illustration of an application for controlling the smartlight switch shown in FIG. 3, presented on a remote device shown in FIG.1;

FIG. 10 shows another illustration of an application for controlling thesmart light switch shown in FIG. 3, presented on a remote device shownin FIG. 1;

FIG. 11 shows an illustration for configuring a voice processing serviceon the application for controlling the smart light switch shown in FIG.3, presented on a remote device shown in FIG. 1;

FIG. 12 shows an illustration for configuring a night light feature onthe smart light switch shown in FIG. 3, using the application presentedon a remote device shown in FIG. 1;

FIG. 13 shows an illustration for configuring a sunset feature on thesmart light switch shown in FIG. 3, using the application presented on aremote device shown in FIG. 1;

FIG. 14 shows an illustration for configuring a Smart On feature on thesmart light switch shown in FIG. 3, using the application presented on aremote device shown in FIG. 1;

FIG. 15 shows an illustration for configuring a Smart Off feature on thesmart light switch shown in FIG. 3, using the application presented on aremote device shown in FIG. 1;

FIG. 16 shows an illustration for configuring a Vacation mode feature onthe smart light switch shown in FIG. 3, using the application presentedon a remote device shown in FIG. 1;

FIG. 17 shows an illustration for configuring a Scheduling feature onthe smart light switch shown in FIG. 3, using the application presentedon a remote device shown in FIG. 1;

FIG. 18 shows another illustration for configuring a Scheduling featureon the smart light switch shown in FIG. 3, using the applicationpresented on a remote device shown in FIG. 1;

FIG. 19 shows an illustration for configuring a location feature on thesmart light switch shown in FIG. 3, using the application presented on aremote device shown in FIG. 1;

FIG. 20 shows an illustration for configuring an Energy feature on thesmart light switch shown in FIG. 3, using the application presented on aremote device shown in FIG. 1; and

FIG. 21 shows a flowchart for calibrating a temperature reading on thesmart light switch shown in FIG. 3.

DETAILED DESCRIPTION OF THE INVENTION

Referring now to FIG. 1, a premise is shown generally at 10. Premise 10is typically a residential home, but could also be a commercialbuilding. Premise 10 is defined by and subdivided into multiple rooms 12(functionally, the kitchen, bedroom, hallway, etc.) by a plurality ofwalls 14. Some walls 14 are interior walls 14A (including bothload-bearing and non-load bearing walls) and some are exterior walls 14B(thicker load-bearing walls, preferably well insulated). For simplicity,other features of premise 10 such as doors, windows, stairs, etc. havebeen omitted from FIG. 1.

Lighting in each room 12 is preferably provided by room light 16. Roomlight 16 can include individually socketed light bulbs, pot lights,fluorescent lighting, etc. Room lighting includes both interior roomlight 16A, as well as external lighting 16B (porch lights, etc.).Control of room light 16 is provided by smart light switch(s) 18.Depending on the electrical wiring for each room 12, each set of roomlight 16 may be controlled by one or more smart light switch(s) 18,which may be single pole, dual pole, etc. Preferably, each smart lightswitch 18 is equipped with wireless communication protocols such asWi-Fi or Bluetooth to connect to a network 24 too provide for remotecontrol of smart light switch(s) 18 from a remote device 26, which istypically a mobile phone or computer. Network 24 can include a localarea networks (LAN) as well as connectivity to the Internet via a router(not depicted). The remote devices 26 may communicate with the smartlight switch 18 directly on same network 24 or indirectly via a remoteserver 28 across the Internet. The hardware and software features ofsmart light switches 18 will be described in greater detail below.Remote server 28 may provide additional functionality (in the form ofSoftware as Service, or SaaS), such as energy modeling, historicalruntime reports, time and weather services, as well as third-party voiceprocessing services such as the Amazon Alexa service.

Premise 10 further includes a HVAC system 20, which may include variousheating and cooling systems furnaces, air conditioning systems, fans,heat pumps, humidification/dehumidification systems and the like. HVACsystem 20 is controlled by a thermostat 22. In the illustratedembodiment, thermostat 22 is a wireless communicating thermostat, suchas the ecobee3 or ecobee 4 smart thermostat. Preferably, thermostat 22is equipped with wireless communication protocols such as Wi-Fi orBluetooth to connect to the network 24 too provide for remote control ofthermostat 22 from the remote device 26. The remote devices 26 maycommunicating with thermostat 22 directly on same network 24 orindirectly via the remote server 28 across the Internet.

Thermostat 22 is further in wireless communication with a one or moreremote sensor(s) 30, which can provide different sensor readings such asoccupancy, temperature, humidity, as well as CO or CO2 values tothermostat 22. Thermostat 22 is operable remote sensor(s) to providetemperature averaging for its readings, prioritize temperature values inrooms where occupancy is detected, and/or reduce the usage of HVACsystem 20 when no occupancy is detected within premise 10 for anextended period of time.

Thermostat 22 is adapted to control HVAC system 20 via a programmingschedule. An example of a program schedule as displayed on the remotedevice 26 is shown in FIG. 20 generally at 200. Programming schedule 200is preferably a seven-day schedule, where each day has one or moreschedule periods 202 (such as a HOME period 202A, an AWAY period 202B, aSLEEP period 202C, etc.), where each schedule period may have differentheating and cooling set points.

Smart Light Switch Hardware

As mentioned previously, control of the room light 16 in premise 10 isprovided by light switch(s) 18. Referring now to FIG. 3, smart lightswitch 18 is shown in greater detail. Smart light switch 18 comprises ahousing 32 adapted to be mounted to an electrical box (not shown)located within wall 14. A trim plate 34 is placed around housing 32 tocover any rough edging in the wall 14 around smart light switch 18. Onthe front surface of smart light switch 18 is a light actuator 36 whichis operable to switch room light 16 on or off, or modify the brightnessof room light 16 (when room light 16 is a dimming light). Light actuator36 may be a simple mechanical On/Off button, a mechanical slide adaptedto provide dimming control, a capacitive or pressure-sensitive touchinterface, or other interface suitably adapted to provide light controlas is known to those of skill in the art. In the presently illustratedembodiment, light actuator 36 is an On/Off button.

Also located on the front surface of smart light switch 18 is a visualsensor 38. In the present embodiment, visual sensor 38 includes amotion/occupancy sensor adapted to detect a person's presence nearby aswell as detect nearby light levels, and is also adapted to turn roomlight 16 On or Off when in specified programming modes (discussedfurther below). Other types of visual sensors (such as cameras withimage recognition) may also be used to provide the capabilities ofvisual sensor 38.

Smart light switch 18 further includes a speaker grate 40 which allowssounds emitted from an internal speaker (also discussed below), andmicrophone aperture(s) 42 which allow sounds from outside housing 32 toreach one or more internal microphones (described below). As isdiscussed in greater detail below, smart light switch 18 may also bevoice-controlled to turn the room light 16 On or Off.

Also located on smart light switch 18 is an activity indicator 44, whichcan be a light pipe driven by one or more LEDs, a lamp assembly, etc.Activity indicator 44 is adapted to illuminate whenever the voicecontrol feature of smart light switch 18 is engaged. Smart light switch18 may also include a night light 46, which is also driven by one ormore LEDs, etc. In the present embodiment, night light 46 is an LEDlight pipe which is housed within the rounded barrel shape of lightactuator 36, illuminating when active, the base of trim plate 34. Insome embodiments, the hardware of activity indicator 44 and night light46 may be physically combined and powered by a singe light source.

FIG. 4 shows a block diagram of the hardware of smart light switch 18.Smart light switch 18 includes an application processor 100, which canbe a microprocessor or any other suitable device as will occur to thoseof skill in the art. Processor 100 is capable of running at differentclock rates, to match available program execution rates to computationalneeds, which can change from time to time. Such multi rate processorsare well known. Smart light switch 18 further includes memory 104, whichcan be non-volatile RAM and/or volatile RAM which is accessible byprocessor 100. As will be apparent to those of skill in the art, memory104 can be integral with processor 100, or can be separate discretedevices or components, as desired. Typically, memory 104 will store oneor more programs for execution by processor 100, as well as variousparameters relating to the execution of the programs and data andworking values required by the programs.

Light actuator 36 is operatively connected to processor 100, as is thevisual sensor 38. Smart light switch 18 further preferably includes areal time clock, either as a service provided in processor 100, or as aseparate component (not shown). Smart light switch 18 can also includeat least one environmental sensor 108, which at a minimum is atemperature sensor but can also include other environmental sensors,such as a humidity sensor, ambient light sensor, magnetic compass, GPSreceiver, etc. which determine respective environmental conditions to becontrolled and/or monitored. Typically, environmental sensors 108 insmart light switch 18 will include at least both a temperature sensor(i.e., a thermistor) and a humidity sensor. Preferably, environmentalsensor 108 will include a primary temperature sensor 108A and at leastone secondary temperature sensor 108B located at a different locationwithin housing 32. As will be described in greater detail below, theenvironmental sensor(s) 108 in smart light switch 18 is adapted toprovide temperature measurements to thermostat 22 to help govern theoperation of HVAC system 20.

A communication module 112 connected to processor 100 to allow processor100 to communicate with network 24 and/or with additional externalsensors or computerized devices (not shown). Preferably, communicationmodule 112 is operable to connect to the desired data networkswirelessly, via an antenna 116, using at least one wirelesscommunication protocol, such as Wi-Fi; Bluetooth; ZigBee; ZWave;Cellular Data, etc., but it is also contemplated that communicationmodule 112 can have a wired connection to the data networks, such as viaan Ethernet connection.

Communication module 112 also allows smart light switch 18 tocommunicate with Internet based services provided by remote server 28(such as weather servers, remote monitoring systems, data loggingservers, voice processing services, etc.) and with applications usedremotely by users of smart light switch 18 via remote device 26 tomonitor and control the controlled premises' environmental state orother conditions. For example, a user remote from smart light switch 18may access an application executing on remote device 26 to send commandsto smart light switch 18, via network 24, to alter the operation ofsmart light switch 18 or a system it is controlling. Furthermore, smartlight switch 18 is operable to communicate with thermostat 22 eitherdirectly (via a mesh network or point-to-point protocol across network24) or indirectly via remote server 28, providing occupancy data fromvisual sensor 38 and temperature data from environmental sensor 108.

Smart light switch 18 further includes a secondary processor assembly120, which is capable of digitizing and processing, as described in moredetail below, audio signals received from at least one, and preferablytwo or more, microphones 124. In the present embodiment, secondaryprocessor assembly 120 is a DSP (digital signal processor) which canreceive inputs from microphones 124 (which are located adjacentmicrophone apertures 42), digitize them and perform signal processingoperations on those digitized signals in accordance with one or moreprograms stored within the DSP. While the current embodiment employs asingle device DSP with the required capabilities, it is alsocontemplated that secondary processor assembly 120 can be constructedfrom two or more discrete components, if desired. It is alsocontemplated that secondary processor assembly 120 can be a separatecomputational core, or cores, included in processor 100.

Smart light switch 18 further includes a control block 128, which can bephysically connected to one or more wires for the light to be controlledby smart light switch 18 (typically hot and cold power lines, neutraland ground). Control block 128 can include mechanical, or solid state,relays adapted to provide control to the attached load in accordancewith one or more programs executed by processor 100.

Smart light switch 18 further includes an audio output subsystem 132,which is operable in response to signals received from processor 100, tooutput an amplified audio signal to a speaker system 136. The output ofspeaker system 136 can be heard through speaker grate 40. Audio outputsubsystem 132 can be a discrete device, or combination of suitablediscrete devices, as desired and is preferably capable of outputtingvoice signals and/or music or other sounds.

User inputs to smart light switch 18 can be achieved viainternet-connected applications running on smartphones or remote devices26 and/or responses from cloud-based processing of voice commandsreceived from the remote processing service on remote severs 28 by smartlight switch 18. When smart light switch 18 also serves as a voicecommand input device for such commands, a user's spoken voice commandsare received by microphones 124 and, as is described in more detailbelow, a representation of that received audio is transmitted by smartlight switch 18 over network 24 to the remote processing service onremote servers 28. The remote processing service receives thetransmitted representation of the audio and determines the meaning ofthe spoken voice commands and prepares an appropriate response which isthen returned to smart light switch 18 for execution, or otherwiseprocessed by another device or service.

Depending upon the range of services offered by the remote voiceprocessing service, the response to a spoken voice command can beselected from a wide range of responses. For example, the remoteprocessing service may have a limited set of available responses, alldirectly related to the control and operation of smart light switch 18,i.e. the voice command could turn the room lights on or off, or modifytheir operation by dimming the lights (if smart light switch 18 providesdimming functions). Alternatively, if the remote processing service hasaddition controls, the voice command received via microphones 124 couldcontrol other associated devices such as thermostat 22—the voice commandcould have been a request to raise the temperature of HVAC system 20. Ina more preferred embodiment, the remote voice processing service is abroadly capable system, such as the above-mentioned ALEXA Voice Service,and the voice commands which can be processed range far beyond thosespecifically related to the control and operation of smart light switch18. For example, a user can ask for the current time and the remotevoice processing service will return an audio stream of a voice sayingthe current time to smart light switch 18, along with the programcommands necessary to have that audio stream played to the user throughspeaker 136.

Similarly, the user may order fast food, such as a pizza, by voicecommand to smart light switch 18 and the remote voice processing servicewill complete the order, perhaps through an interactive set of audioexchanges with the user through microphones 124 and speaker 136 or inaccordance with predefined settings (size of pizza, toppings, paymentmethod, etc.) previously defined by the user, and will forward theresulting order through the internet to the pizza supplier whileconfirming the same to the user via an appropriate audio voice streamoutput at smart light switch 18. In this regard, computerized smartlight switch 18 can perform many or all of the functions of a voicecommand input device such as the Amazon Echo device, typically used tointeract with the ALEXA voice service, or the corresponding Google Homedevice and service, etc. in addition to performing it's other controlfunctions, such as regulating temperature and/or humidity in anenvironment.

Registration of Smart Light Switch 18

When a smart light switch 18 is installed in a wall 14 and connectedthrough control block 128, it will operate like a traditional lightswitch or traditional dimming light switch via lighting activator 36.However, it gains additional functionality when connected to network 24.Using remote device 26, it is possible to connect smart light switch 18to network 24 and register it on remote server 28. By registering smartlight switch 18, it may be operably controlled by the remote device 26and connected to thermostat 22.

When first installed and not registered with remote server 28, smartlight switch 18 will broadcast itself across any detected networks 24via established discovery protocols that can be detected via a remoteapplication 402 running on remote device 26. FIG. 5 shows an example ofa remote application running on remote device 26. The remote applicationmay be a dedicated application or a web-based application. The user maythen connect the switch to the desired network 24.

Once connected to the desired network 24, the smart light switch 18 willcommunicate with remote server 28 in order to register the smart lightswitch 18 with a user account 404 (FIG. 6). Using remote application402, the user will either create a new account 404 on remote server 28for smart light switch 18, or associate it with an existing account 404on remote server 28.

The user will then be asked to provide additional details about thesmart light switch 18 such as its geographical location 406, andinternal location 408 within premise 10. Geographical location 406 maybe derived from the GPS location of remote device 26, the location ofnetwork 24 as shown via a map of networks accessed by remote server 28,or via manual entry by the user within remote application 402, as shownin FIG. 8). By determining geographical location 406, the time zone ofsmart light switch 18 is also determined. For internal location 408, theuser will be asked to identify the location of smart light switch 18within a premise, such as BEDROOM, HALLWAY, KITCHEN, or OUTSIDE, etc.The user may also provide a custom name and location for the smart lightswitch 18.

If the account 404 is already associated with a thermostat 22, the userwill be asked if he or she wishes to link smart light switch 18 withthermostat 22. By linking smart light switch 18 with thermostat 22,smart light switch 18 will be able to provide temperature and occupancydata from its environmental sensor 108 and visual sensor 38 tothermostat 22 and act as a remote sensor 30 for thermostat 22.Furthermore, the user may be asked if he or she wishes to link aprogramming schedule of the smart light 18 with the programming scheduleon smart thermostat 22, for rules-based control of smart light switch 18(described in more detail below).

Also during installation, the user will be able to associate the smartlight switch 18 with a preferred remote voice processing service such asAlexa, and link switch 18 with the user's own account on that voiceprocessing service. Depending on the embodiment, the user may be able toassociate the smart light switch 18 (each with a different activatingwake word) with one or more different remote voice processing services.

Lighting Control

As seen in FIG. 9, using remote application 402, the user may controlany associated smart light switch(s) 18 and thermostat(s) 22. Byselecting a particular smart light switch 18, the user can see its ON orOFF status and control it directly to turn that smart light switch 18 onor off (FIG. 10). In switches 18 with dimming feature, the brightness ofthe light may also be adjusted.

In addition to direct control, a user may use remote application 402 toconfigure the behavior of their smart light switch 18 and its smartfeatures. Smart features on smart light switch 18 may include voicecontrol 410, night light control 412, sunset mode 414, Smart On 416,Smart Off 418, vacation mode 420, schedule mode 422, an additionalschedule configuration menu 423, and Energy menu 428.

Using voice control 410, a user may turn a light on or off simply byusing the associated remote processing service. For example, a user maysimply say “Alexa, turn off the kitchen light” (where Alexa is theassociated voice processing service), and the smart light switch 18 thathas an internal location 408 of KITCHEN will be turned off. In caseswhere a user says “Alexa, turn off the light”, then the smart lightswitch 18 nearest to the user (as determined by the signal strength ofits microphones 124) will turn off. By saying “Alexa, turn of thelights” or “Alexa, I'm leaving”, then all the associated switches 18 inpremise 10 will be turned off. Using remote application 402, a user maydetermine whether that particular switch is associated with the voiceprocessing service (Mic on or Mic Off), the volume the speaker assembly136 and whether the smart light switch 18 beeps if it begins to listenfor commands (Request Sounds), as shown in FIG. 11

Using night light control 412, the user may configure the behavior ofnight light 46 (see for example, FIG. 12). For example, the brightnesslevel of night light 46 when engaged may be configured. The user mayalso configure night light 46 to turn on based upon the detected lightlevels of visual sensor 38 (i.e., turn it on when it gets dark), byoccupancy detection via visual sensor 38 (i.e., turn it on when somebodyenters the room), or a combination of the two. Alternatively, nightlight 46 may be actuated based upon the sunset time (as determined bygeographical location 406), or by the scheduling mode 202 set withinthermostat 22. For example, night light 46 could be engaged wheneverthermostat 22 enters the Sleep scheduling period 202C, but turned offwhenever thermostat 22 is in Home period 202A or Away 202B.

Using Sunset mode 414, the user may configure the behavior of theattached light based upon the upon the sunset time (as determined bygeographical location 406). For example, a light may automatically turnon at sunset and turn off at dawn (FIG. 13). In some embodiments, a usermay set a delay for when the Sunset mode is activated (for example,switching Sunset mode on sixty minutes after sunset has occurred), andhave Sunset mode deactivated for a period of time before sunrise (forexample, switching sunset mode 414 off thirty minutes before sunrise).Alternatively, the light may automatically turn on after sunset onlywhen visual sensor 38 detects a person nearby.

Using Smart On 416 (FIG. 14), smart light switch 18 will automaticallyturn the room light 16 on when visual sensor 38 detects a person withinthe room 12, and the room 12 is dark, as determined by visual sensor 38.In some embodiments, Smart On 416 may be selectively disabled forperiods of time (described in more detail below).

Using Smart Off 418 (FIG. 15), smart light switch 18 will automaticallyturn the room light 16 off when visual sensor 38 detects that no one isin the room after a period of time. The default period of time requiredto trigger Smart Off 418 is five minutes, but this period may belengthened or shortened by the user using remote application 402.

Using vacation mode 420 (FIG. 16), the normal operation and scheduling(i.e., set of activation rules) of smart light switch 18 is suspended.Instead, when smart light switch 18 is in vacation mode 420, it willintermittently turn its light on for periods of time to simulate thepresence of people in premise 10. While in vacation mode 420, duringperiods of darkness (as determined by either visual sensor 38 or bysunset time), smart light switch 18 will intermittently turn the roomlight 16 on for a period of time. The default period of time for thelight to be on in Vacation mode is five minutes, but this period may belengthened or shortened by the user using remote application 402. Whilein vacation mode 416, light switches 18 that have an internal location406 of OUTSIDE, will always turn on when the visual sensor 38 detectsmotion nearby.

Alternatively, in some embodiments, smart light switch 18 may learn thelight activation behaviors of the users, by tracking when the light isturned on or off (via the light actuator 36, the Smart On 416 feature,etc.), storing this On/Off state data in memory 104 or on remote server28. Given this historical data, processor 100 may calculate theprobability that the room light 16 would be on at any particular time,and the average length of time that that the light remains on. Processor100 may then activate engaging the room light 16 probabilistically andfor variable periods of time based upon the historical data. In thisway, smart light switch 18 will provide a realistic approximation oflighting activity as if premise 10 were currently inhabited.

Using Scheduling Mode 422 (FIG. 17), the user may modify the behavior ofsmart light switch 18 using a set of light activation rules stored in aprogrammed schedule 422. Programmed schedule 422 may have variousscheduling periods 424, such as HOME period 424A, an AWAY period 424B, aSLEEP period 424C, etc.). The user is free to set the start and endtimes for each scheduling period using a seven-day schedule 422.Alternatively, if account 404 is associated with one or more thermostats22, then the user may select a thermostat 22. In this case, the timingof scheduling periods 424 programmed schedule 422 may be automaticallylinked to program schedule 200 on thermostat 22 so that schedulingperiods 424 are coterminous with scheduling periods 202 on thermostat22. Updating the scheduling start or end periods on one of thermostat 22and smart light switch 18 updates the scheduling periods on the other.

A user may customize the behavior of smart light switch 18 (i.e., lightactivation rules) for each scheduling period 424 (FIG. 18). In oneembodiment, a user may simply select an Always ON or Always Off statefor the associated light for each period 424. In some embodiments, auser may modify the behaviors of smart light switch 18 for eachscheduling period 424. For example, a user may disable the Smart On 416feature while in SLEEP period 424C, or enable Smart Off while in Awayperiod 424B.

It is contemplated that the smart features displayed on remoteapplication 402 may be arranged depending on the internal location 408selected during registration (FIG. 19). For example, if smart lightswitch 18 has an internal location 408 of OUTSIDE, then the sunset mode414 will be presented to the user. However, if smart light switch 18 hasan internal location 408 of KITCHEN, then sunset mode 414 may not bepresented to the user (or at least on the primary screen of remoteapplication 402).

Using Configuration menu 426 (FIG. 7), a user may adjust varioussettings of their smart light switch 18, such as device name, theirgeographical location 406 or their internal location 408, their network24 selection, as well as configuration with third party services such asApple HomeKit or Samsung Smart Things.

Using Energy menu 428 (FIG. 20), the user may modify the behavior ofsmart light switch 18 based upon time of use rates or demand responseevents by the user's electrical utility. For example, a user may shortenthe period of time used by Smart Off 414 or Vacation Mode 416 when ademand response has been issued by the local utility, or when the useris in a higher time of use rate category. The user may also registertheir smart light switch 18 with their local utility program. In thiscase, the remote server 28 will link smart light switch 18 with aparticipating utility program to allow for control or modification ofsmart light switch 18 via remote server 28.

Temperature Measurement Calibration

As is described above, the environmental sensor 108 is operable toprovide temperature measuring of the room where smart light switch 18 islocated. Temperature measurements can be sent to thermostat 22 viacommunication module 112. However, the non-calibrated temperature readby environmental sensor 108 is usually different with the truetemperature in the room where the smart light switch 18 is located. Thisis because environmental sensor 108 is influenced by all the heatgenerating components mounted within inside housing 32. The heatgenerating components in the device (including, processor 100, secondaryprocessor 120, speaker system 136, etc.) generate variable amounts ofheat with various activities on smart light switch 18, like playingaudio, turning on the activity indicator 44 or night light 46), evenwhen running in a low-powered mode. A real-time calibration method isneeded to compensate the temperature sensor data provided byenvironmental sensor 108 to provide accurate room temperature reading.

Compared with previous temperature calibration method developed forsmart thermostats, smart light switch 18 includes additional challenges,including that the power wires attached to control block 128 willgenerate non-negligible heats inside of housing 32, depending on theload size of the room light, which is generally unknown to processor100. The light load typically can range from 10 w to 500 w (deepening onthe light source such as incandescent, LED, fluorescent, compactfluorescent, etc.). In addition, smart light switch 18 is usuallyinstalled inside of a wall 14. There are various types of walls andinsulations (barely insulated, moderately insulated, heavily insulated,etc.), which will influence the speed and pattern of heat diffusioninside housing 32, impacting the temperature readings of environmentalsensor 108.

Given the above difficulties, processor 100 includes a temperaturecompensation method, which is depicted generally in FIG. 21. Beginningat step 300, processor 100 gathers the measured temperature inputs 302and power consumption inputs 304 (collectively, “inputs”), including:

-   -   (1) Temperature measurement on primary temperature sensor 108A        (T_(read))    -   (2) Temperature measurement on secondary temperature sensor 108B        (T_(board))    -   (3) Measurement of general power consumption on smart light        switch 18 (P_(raw))    -   (4) Measurement of power consumption of speaker assembly 136        (P_(audio))    -   (5) Cpu-speed status of processor 100 and secondary processor        120 (low/high) (N_(c))    -   (6) Nightlight 48 level status (0-10) (N_(n))    -   (7) Activity Indicator 44 status (on/off) (N_(l))    -   (8) Relay status of control block 128 (on/off) (N_(r))    -   (9) Audio volume of speaker assembly 136 (0-100) N_(a).

The various inputs can be taken as raw values or otherwise normalized byprocessor 100.

At step 310, processor 100 applies an exponential smoothing factor 312to the various power consumption inputs 304 to create a continuous powerconsumption curve 314 for each power consumption input 304. Theexponential smoothing factor 312 is approximation of the physicalphenomena of heat diffusion and transferring within and without housing32. The smoothing factor 312 controls the smoothness of the derivedresult. A small smoothing factor 312 represents a slow heat diffusion ortransfer, while large smooth factor 312 indicates the heating takeseffect quickly. Preferably, each heat-generating component (and thus itscorresponding power consumption input 304) has its own smoothing factor312.

At step 320, processor uses a decision tree 322 that is stored withinmemory 104 to provide a calibrated temperature offset value 324.Decision tree 322 is a predetermined dataset of temperature offsetvalues 324 derived from thousands of various combinations of enabled anddisabled power-consuming components, and determined from regressiveanalysis of thermal testing of smart light switch 18 under various loadconditions and combinations against an external temperature sensor (notdepicted).

At step 330, a low pass filter is applied to the output of decision tree322 to suppress any random errors created in earlier steps of themethod.

At step 340, a calibrated temperature value 342 derived from the rawvalues from environmental sensors 108 is provided. The calibratedtemperature value 342 can then be transmitted to thermostat 22 viacommunication module 112 for use in determining set point control ofHVAC system 20.

While decision tree 322 is prepopulated with temperature offset values326 prior to installation of smart light switch 18, it is contemplatedthat the temperature offsets 326 could be periodically updated. Duringperiods of inactivity, where room light 16 has been off for a period oftime, and where the level of waste heat generated by the heat generatingcomponents of smart light switch 18 is low (i.e., a low power mode), thedelta between the temperature measured by environmental sensors 108 andthe true room temperature in room 12 will be low, and thus the measuredtemperature provided by environmental sensors 108 will be closest toaccurate. At this point of low activity, smart light switch 18 cancalculate a baseline temperature difference value, the baselinetemperature difference value being the delta between measuredtemperature values between the room 12A where smart light switch 18 islocated and the room 12B where smart thermostat 22 is located. Bymeasuring this difference across multiple time periods of low activity,baseline temperature difference value for smart light switch 18 may becalculated. Additional baseline temperature difference values may becalculated between smart light switch 18 and each remote sensor 30, aswell as between smart light switch 18 and other low activity smart lightswitches 18 within premise 10.

In most scenarios, where HVAC system 20 is properly functioning, thisbaseline temperature difference value of each pairing should remainrelatively constant. When smart light switch 18 is engaged (eitherthrough the powering of room light 16, activation of speaker assembly136, etc.), processor 100 may observe that the specific temperaturedelta between smart light switch 18 and smart thermostat 22 (or remotesensor 30, or another smart light switch 18) increases or decreasesrelative to the baseline temperature difference value while smart lightswitch 18 is in a particular set of decision tree 322 decisions. In thiscase, the temperature offset for that set of decision tree 322 decisionsmay be increased or decreased accordingly to decrease the currentdifference relative to the baseline temperature difference value.

The above-described embodiments of the invention are intended to beexamples of the present invention and alterations and modifications maybe effected thereto, by those of skill in the art, without departingfrom the scope of the invention which is defined solely by the claimsappended hereto.

What is claimed is:
 1. A smart light switch comprising: a housing, thehousing including a control block adapted to be operably connected to anelectrical load; a light actuator located within the housing, the lightactuator operable to be electrically connected with the electrical loadand selectively turn the electrical load on and off; a processor andmemory, the processor and memory being operably connected and locatedwithin the housing, the processor being adapted to selectively turn theelectrical load on and off in accordance with a smart light switchprogram schedule stored in memory; and a data communications moduleoperable to provide data communication across a wireless network to aremote device; wherein the smart light switch program schedule includesa plurality of time periods and a set of light activation rules for eachtime period in the plurality of time periods; and the smart light switchis operable to receive a set of remote device activation rules from aremote device; and the set of light activation rules includesinstructions to control lighting of the smart light switch based on theset of remote device activation rules to independently activate anddeactivate a plurality of different light-sensing and occupancyfunctions of the smart light switch for each time period in theplurality of time periods.
 2. The smart light switch of claim 1, whereinthe remote device is a thermostat, the set of remote device activationrules includes a thermostat program schedule to control activation of anHVAC system, and wherein the set of remote device activation rulesincludes instructions to update the time periods of the smart lightswitch program schedule to be coterminous with time periods of thethermostat program schedule.
 3. The smart light switch of claim 1,wherein the smart light switch further includes a night light andwherein the set of light activation rules includes light activationrules for control of the night light.
 4. The smart light switch of claim1, wherein the smart light switch further includes a motion sensor andwherein the set of light activation rules includes light activationrules based upon detection of motion by the motion sensor.
 5. The smartlight switch of claim 1, wherein the smart light switch further includesa motion sensor and wherein the set of light activation rules includeslight activation rules based upon an absence of motion detected by themotion sensor.
 6. The smart light switch of claim 1, wherein the smartlight switch further includes a light sensor and wherein the set oflight activation rules includes light activation rules based upon alevel of light detected by the light sensor.
 7. The smart light switchof claim 1, wherein the processor is operable to receive, from theremote device, an indication of a geographic location and a time of daycorresponding to the geographic location, and the set of remote deviceactivation rules includes instructions to control lighting of the smartlight switch based upon the geographic location and the time of day. 8.A smart light switch comprising: a housing, the housing including acontrol block adapted to be operably connected to an electrical load; alight actuator located within the housing, the light actuator operableto be electrically connected with the electrical load and selectivelyturn the electrical load on and off; a processor and memory, theprocessor and memory being operably connected and located within thehousing, the processor being adapted to selectively turn the electricalload on and off in accordance with a smart light switch program schedulestored in memory; and a data communications module operable to providedata communication across a wireless network to a remote device; whereinthe smart light switch program schedule includes a plurality of timeperiods and a set of light activation rules for each time period in theplurality of time periods; and wherein the set of light activation rulesincludes instructions to control lighting of the smart light switch toindependently activate and deactivate a plurality of differentlight-sensing and occupancy functions of the smart light switch for eachtime period in the plurality of time periods based on a geographiclocation, a time zone, and an indoor or outdoor location of a lightcontrolled by the smart light switch as selected via the remote device.